Was it because of the heavy snowstorm in Europe ________ the flight had to be put off?
Sir, you ________ take this seat. It’s just for the old.
He spoke as though he________ anything of the world. --Really?
As we know, the 2008 Olympic will________ in Beijing, China.
The old man has two sons,________is a soldier.
------What about going out for a walk after supper?-------______. Walking after meals is good for health.